third_party/WebKit/LayoutTests/fast/dom/Document/parent-node-interface.html

   1 <!DOCTYPE html>
   2 <body>
   3 <script src="../../../resources/js-test.js"></script>
   4 <script>
   5
   6 description('This tests that Document implements the ParentNode interface.');
   7
   8 var doc = document.implementation.createDocument('', null, null);
   9
  10 shouldBe('doc.children.length', '0');
  11 shouldBe('doc.childElementCount', '0');
  12 shouldBeNull('doc.firstElementChild');
  13 shouldBeNull('doc.lastElementChild');
  14
  15 doc.appendChild(new Comment('a'));
  16 shouldBe('doc.children.length', '0');
  17 shouldBe('doc.childElementCount', '0');
  18 shouldBeNull('doc.firstElementChild');
  19 shouldBeNull('doc.lastElementChild');
  20
  21 var b = doc.appendChild(doc.createElement('b'));
  22 shouldBe('doc.children.length', '1');
  23 shouldBe('doc.childElementCount', '1');
  24 shouldBe('doc.children[0]', 'b');
  25 shouldBe('doc.firstElementChild', 'b');
  26 shouldBe('doc.lastElementChild', 'b');
  27
  28 doc.appendChild(new Comment('c'));
  29 shouldBe('doc.children.length', '1');
  30 shouldBe('doc.childElementCount', '1');
  31 shouldBe('doc.children[0]', 'b');
  32 shouldBe('doc.firstElementChild', 'b');
  33 shouldBe('doc.lastElementChild', 'b');
  34
  35 </script>